Keepers at the Chimfunshi Wildlife Orphanage in Zambia have noticed a fashion trend spreading among groups of chimpanzees living there – sticking strands of grass in their ears or rectums, and just le

Meet the prehistoric giants that roamed the Arctic Circle thousands of years ago

Amazing answers to your curious questions

Whether winter-faded ferns, the spindly harvestman or the tyrannical stare of an irate chicken, through-lines from the prehistoric to our modern age are all around us in November, says John Lewis-Stempel

Projecting our consciousness into other bodies and walking on alien worlds might not be such a far-flung concept

The SAS (Special Air Service) make routine use of sleep-deprivation exercises in their selection process, and these often feature in later training. Hallucinations during such exercises are very commo